1739 results about "Blow molding" patented technology

The invention relates to the technical field of production debugging control, and discloses a production debugging control method and system for a plastic container. The method comprises the following steps: arranging a plurality of different sensors in plastic container blow molding equipment, and simultaneously collecting blow molding process parameter data; performing wavelet threshold denoising and anomaly identification on the blow molding process parameter data to obtain a process parameter anomaly identification result; establishing a transfer function matrix between the process parameters and quality indexes according to the process parameter anomaly identification result, and obtaining a target process parameter set through multi-target optimization; and inputting the target process parameter set into a double-integral enhanced recurrent neural network for parameter regulation and control calculation to obtain a process parameter adjustment amount. According to the method, early detection and accurate positioning of process abnormity in the blow molding process are realized, the quality fluctuation risk and the defective product rate are greatly reduced, and the technical problem that different response characteristic parameters are difficult to coordinate is solved.

The invention relates to the technical field of intelligent detection, and discloses an intelligent detection method, device and equipment for a plastic container, and the method comprises the following steps: carrying out multi-angle image acquisition on preforming, blank forming, multi-layer co-extrusion and final blowing forming stages of a plastic container blow molding process to obtain an original image data set; performing targeted preprocessing on the images in each forming stage to obtain an enhanced image data set, and performing feature calculation to obtain multilayer forming feature description data; establishing a feature mapping relationship among different forming stages to obtain defect position and type data; according to the blow molding equipment control system and method, full-process monitoring of the whole blow molding process is achieved, closed-loop control over defect detection and production parameter adjustment is achieved, and the production efficiency is improved. The technical problem that interface defects of all layers in the multi-layer forming process cannot be monitored in real time through a traditional detection method is solved, and the qualification rate of plastic containers is increased.

The invention relates to the technical field of high polymer material preparation, and discloses a bamboo fiber graft modified full-biodegradable composite membrane material preparation process which comprises the following steps: firstly, performing hot mixing and cooling on dried bamboo fiber powder, anhydrous citric acid, choline chloride, activated zinc oxide and pentaerythritol to prepare a bamboo fiber modified premix; then mixing the biodegradable polyester resin with the premix; adding the mixture into an extruder, injecting epoxidized soybean oil into a barrel through a liquid metering device, and performing melt extrusion granulation under a vacuum exhaust condition; and finally carrying out blow molding to form the film. Through in-situ reaction extrusion of multi-component synergism, surface grafting of bamboo fibers, chain extension of a polyester matrix and interface chemical bonding of the bamboo fibers and the polyester matrix are achieved, interface compatibility is effectively improved, degradation of the material in the processing process is inhibited, and the mechanical property and thermal stability of the composite film material are remarkably improved; the process is efficient and environment-friendly, and the cost is controllable.

The present subject matter discloses an integrated door assembly for a prefabricated shed constructed from modular plastic components or panels. The door assembly comprises a door panel that includes a door side panel and a door body, which are integrally formed through blow molding. The door body is connected to the door side panel via an embedded folding groove, featuring a thinner plastic material at the fold to allow for flexibility and ease of movement. Additionally, the door assembly incorporates a pivotable frame bracket that encases the edges of the hinged, rotating panels, enhancing both strength and durability.

The invention discloses a light-weight manufacturing method and system for a PET bottle for food packaging, particularly relates to the technical field of PET bottle blank manufacturing, and aims to solve the problem that the subsequent blow molding quality is affected due to the fact that complex internal stress is generated in a bottle blank due to a rapid cooling process after injection molding in the prior art. Image information and temperature distribution data of a bottle blank after injection molding are obtained, geometric features and cooling rate differences are analyzed and recognized based on multi-physics coupling, a stress cause weight evaluation model is established to generate a stress distribution map, and then structural entropy increase factors under different temperature adjustment paths are simulated and calculated according to thermodynamic parameters, so that the temperature adjustment precision is improved. And carrying out partitioned temperature adjustment treatment on the bottle blank, and finally, carrying out constant-temperature and constant-humidity standing to sufficiently relax the stress. The internal stress distribution of the bottle blank can be effectively controlled, and the wall thickness uniformity and the mechanical property consistency of the light-weight PET bottle are improved.

The invention relates to the field of forming preparation of plastic state materials, in particular to a bio-based degradable photocatalytic film and a preparation method thereof. The invention provides a ternary composite system taking bacterial cellulose as a framework, chitosan as an interface adhesive and doped titanium dioxide as a photocatalytic active component, and continuous production of the film is realized by adopting an extrusion blow molding process for molding a plastic state material. The degradable photocatalytic film prepared by the method is high in mechanical property, high in photocatalytic capacity and rapid and thorough in degradation under natural conditions.

The invention relates to the technical field of industrial control systems, in particular to a multi-sensor self-adaptive control system and method of an injection-stretch-blow molding machine. The intelligent diagnosis module performs rapid detection and fine working condition identification by adopting a layered architecture, and outputs a diagnosis identifier and confidence; the decision-making module fuses expert knowledge and an online learning result, and determines an optimization coping strategy in combination with confidence; dynamically loading a control parameter set according to a strategy; the adaptive control module calculates an original instruction based on the parameter set and the data; generating a final signal according to the confidence coefficient smoothing instruction; and the execution interface module sends the signal to an execution mechanism to realize self-adaptive control. The invention further discloses a corresponding method. According to the system and the method, accurate diagnosis, differential decision and accurate strategy execution can be realized, smooth transition of control is ensured, and the control performance, the product quality and the operation robustness are remarkably improved.

The invention relates to the technical field of research and development of BIB liquid packaging materials, and discloses a PE-PA-based composite film, a manufacturing process and an application in BIB liquid packaging, and specifically comprises the following steps: synthesizing a PE-PA compatilizer; the preparation method comprises the following steps: carrying out ring-opening reaction on an epoxy functional group of a PE-PA compatilizer and an amino functional group or a carboxyl functional group at a PA resin molecular chain end to prepare PE-PA compatilizer grafted nylon resin, and carrying out physical anchoring action on a long-chain alkane structure on the PE-PA compatilizer grafted nylon resin and a PE resin molecular chain to prepare the PE-PA alloy master batch; low-density polyethylene resin is used as a raw material of a supporting layer, PE-PA alloy master batch is used as a raw material of a functional layer, metallocene polyethylene resin is used as a raw material of a heat sealing layer, a three-layer co-extrusion blow molding film forming technology is adopted, the PE-PA composite film is prepared, and the film product is excellent in comprehensive performance and can be used for manufacturing a BIB bag body.

The invention relates to the technical field of data processing, in particular to a data enhancement prediction method for the thermoelastic quality factor of a micro-hemispherical resonator, which comprises the following steps: S1, determining the radius size of the manufactured micro-hemispherical resonator, determining the simulation value range of the radius and thickness of an anchor point of the resonator, and determining the simulation value range of the thickness of the resonator; harmonic oscillators with different geometric boundary dimensions are established through high-temperature blow molding simulation; s2, thermodynamic simulation is carried out on the harmonic oscillator appearance obtained through blow molding simulation, and a harmonic oscillator thermoelastic quality factor data set is established; s3, performing data enhancement on the thermoelastic quality factor data set by adopting a cubic polynomial fitting method; and S4, training the enhanced thermoelastic quality factor data set by using a deep learning model to obtain a harmonic oscillator thermoelastic quality factor prediction model. According to the method, the bottleneck of scarcity of high-precision simulation data is broken through, unification of high precision and high efficiency is realized, the robustness and reliability of a prediction model are improved, and the method has wide engineering applicability and popularization value.

The invention relates to the technical field of high polymer material processing, in particular to a blow molding method of a composite toughened film, which comprises the following steps: step 1, preheating matrix resin in preheating equipment; 2, feeding the mixed raw materials into a double-screw extruder for melt blending; 3, feeding the dried composite particles into a hopper of a single-screw blow molding extruder; 4, adjusting the air volume and the air pressure of the cooling system according to the monitoring result; and 5, the formed film pipe is folded into a flat shape through a guide component and led out through a traction roller, the traction speed and the extrusion speed are coordinated to control the traction ratio, corona treatment is conducted on the surface of the thin film to improve the surface energy, then rolling tension is controlled for rolling, and the rolling tension is controlled according to the elasticity and thickness of the thin film to prevent excessive stretching or loosening. The uniform distribution and proper compatibility of the composite toughening component improve the toughness of the film, and maintain the strength and barrier property of the film.

The invention relates to the technical field of degradable PE (polyethylene) packaging materials, and discloses a PE film, a preparation process and application in tissue packaging, and the PE film is prepared by the following steps: by taking 7-(diethylamino) coumarin-3-carboxylic acid, 2-naphthyl methanol and epoxy chloropropane as raw materials, carrying out esterification reaction and quaternization reaction to prepare an epoxidized biodegradable organic photosensitizer; based on an epoxy-hydroxyl ring-opening reaction mechanism, hydroxylated titanium dioxide nanoparticles and polyvinyl alcohol resin are respectively modified by using an epoxidized biodegradable organic photosensitizer, and compounding is performed based on a pi-pi accumulation effect between aromatic rings to prepare the ultraviolet light dependent photo-biodegradable component. According to the present invention, the ultraviolet light dependent light-biological degradation component, the compatible component and the composite auxiliary agent are added to the polyethylene matrix, and blow molding is performed to obtain the PE film, and the film product shows excellent light-biological dual degradation performance, has actual use value, and can be used in the tissue packaging field.

The invention relates to the technical field of blow molding machine control, in particular to a blow molding machine control method, system and device capable of achieving uniform product wall thickness. The method specifically comprises the steps that the thermoplastic sensitivity of each monitoring area of a tubular parison is calculated according to the thermal deformation condition and the temperature distribution condition of the tubular parison; determining a corresponding wall side area of each tubular parison monitoring area on the mold, and obtaining an air supply deviation demand degree of each wall side area on the basis of the thermoplastic sensitivity according to the molding contour demand degree expression of each wall side area of the mold and the pressure presentation effect of the wall side; the offset amplitude compensation value is obtained according to the distribution difference of the air supply offset demand degrees of all the wall side areas so as to adjust the proportional gain coefficient, then the PID controller is combined, the air supply outlet can be adjusted adaptively according to the blow molding demand of all the areas in the blow molding fine adjustment stage, and the blow molding precision is improved. And the problem of poor blow molding effect caused by the fact that the air supply outlet always adopts a vertical downward blow molding mode on the tubular parison in the traditional blow molding process is avoided.

The invention relates to the technical field of blow molding equipment, and provides integrated blow molding equipment capable of recycling waste materials and a blow molding method.The integrated blow molding equipment comprises a base body; the extrusion device is arranged on the base body and can receive plastic particles manufactured by the plastic granulator and extrude the plastic particles into hollow parisons; the mold comprises two first half molds and two second half molds, the two first half molds can move away from each other and can move close to each other to a closed state to form a first blow molding cavity with a first upper opening, and the two second half molds can move away from each other to form a second blow molding cavity with a second upper opening; the first blow molding cavity and the second blow molding cavity can move close to each other to a closed state to form a second blow molding cavity with a second upper opening, and the sizes of the first blow molding cavity and the second blow molding cavity are different from each other; and the blow molding executing mechanism is used for conducting blow molding on the parisons in the first blow molding cavity and the second blow molding cavity to form the plastic bottles, and the equipment can meet the blow molding requirements of the plastic bottles of multiple specifications.

The invention relates to a blow molding part taking-out and blanking edge removing device which is characterized in that a molded plastic part taking-out mechanism comprises a linear module, an overhanging arm and a material receiving groove and is used for receiving molded plastic parts falling off after a mold is opened by a mold closing mechanism when the material receiving groove moves to an upper working position and conveying the molded plastic parts to a lower working position; the discharging edge removing mechanism is arranged on the right side, located on the lower station, of the material receiving groove and comprises two oppositely-arranged plastic part pressing assemblies and two oppositely-arranged edge removing assemblies. The base plate is provided with a hollowed-out hole allowing the discharging edge to pass through, and the waste output mechanism is arranged below the hollowed-out hole. And the molded plastic part conveying mechanism adopts a belt type conveying mechanism which is arranged along the left side and the right side, and a conveying belt is arranged in a side standing manner and is used for conveying the molded plastic part which is moved to the next station through the molded plastic part taking-out mechanism to the discharging edge removing mechanism and conveying the molded plastic part of which the discharging edge is removed to the inlet end of the tail end output mechanism, so that the output of the molded plastic part is realized. The device is compact in structure and suitable for high-speed multi-mode blow molding production.

The invention provides a blow molding product wall thickness on-line control method based on image recognition, and relates to the technical field of on-line control, and the method comprises the following steps: formulating type process parameters, calculating wall thickness adjustment parameters according to the adjusted melt extrusion amount and die orifice shape, adjusting the type process parameters to obtain molding control parameters, and controlling the molding control parameters to be in a closed state. And acquiring the thickness of the target blow molding product in the forming process to obtain time sequence thickness data. And whether the time sequence thickness data reach a preset target thickness threshold value or not is judged, if yes, the current forming control parameters are maintained, and if not, the wall thickness adjusting parameters are optimized. And performing feature extraction on the time sequence thickness data to obtain wall thickness deviation features, analyzing a linkage relationship between the wall thickness deviation features and the type process parameters to obtain associated correction parameters, and optimizing the wall thickness adjustment parameters to obtain wall thickness correction parameters. The directional correction capability of local deviation can be enhanced, the wall thickness control precision and stability are improved, and the method is suitable for products with different shapes and functions.

A fully recyclable container and a method of manufacturing the same is provided. The container includes a cap, a shoulder, a body, a base, and a liner. The cap, the shoulder, and the base are made of biodegradable plastic by injection molding while the body is made of waterproof paper. The cap, the shoulder, and the base are detachably connected to form a housing of the container. The liner is formed inside the housing by blow molding of biodegradable plastic. The respective components of the container are completely made of biodegradable or bio-decomposable material and able to be disassembled for sorting and recycling. Thereby the fully recyclable container completely meets requirements of environmental protection and recycling.

The invention relates to the field of hollow blow molding, and discloses extrusion hollow blow molding equipment which comprises a bottom plate, a blow molding structure is arranged on the right side of the upper surface of the bottom plate, vertical plates are fastened to the middles of the front side and the rear side of the bottom plate through bolts, and two sets of forming molds are arranged between the two vertical plates through a first overturning structure. The material taking structure is arranged on the left side of the upper face of the bottom plate, under the action of the driving structure, the first overturning structure is driven to conduct overturning switching on the two sets of molds, in this way, after blow molding is conducted in one set of molds, the other set of molds can be switched in time to continue blow molding, operation is more labor-saving and convenient, and the working efficiency is greatly improved.

The invention discloses a high-toughness polyethylene composite film and a preparation method thereof, and belongs to the field of high polymer materials. The outer layer is prepared from linear low-density polyethylene, an ethylene-butyl acrylate copolymer, an antioxidant 1010 and an ultraviolet light absorber UV-531; the middle layer is prepared from linear low-density polyethylene, a polyolefin elastomer, an ethylene-butyl acrylate copolymer, stearic acid modified calcium carbonate, an antioxidant and an ultraviolet light absorber; and the inner layer is composed of linear low-density polyethylene, an ethylene-butyl acrylate copolymer, an antioxidant 1010 and an ultraviolet light absorber UV-531. Drying the raw materials; mixing heavy calcium carbonate with stearic acid; each layer is mixed at a low speed according to a ratio; and carrying out three-layer co-extrusion film blowing, two-way stretching, corona and annealing. The surface tension of the composite film reaches 40 mN / m, the maximum longitudinal and transverse tensile strength is 23 MPa, the tearing strength is 120 kN / m, the elongation at break is 700%, and the performance of the composite film is superior to that of traditional casting and blow molding process products.

The present invention relates to the field of polyurethane materials and particularly to a temperature-induced color-changing vehicle film and a preparation method therefor. The method of the present invention comprises: firstly, using polyurethane to wrap vanadium dioxide powder to obtain color-changing microcapsules; then using 1,1,1,3,5,5,5-heptamethyltrisiloxane and 3-allyloxy-1,2-propanediol as raw materials to synthesize an organosilicon-modified diol, and enabling trimellitic anhydride to react with toluene diisocyanate to synthesize a dicarboximide compound; enabling the organosilicon-modified diol and the dicarboximide compound to undergo an esterification reaction and a polymerization reaction to obtain an organosilicon-modified imide polyester diol; then mixing the organosilicon-modified imide polyester diol with polytetrahydrofuran ether glycol 2000, and then enabling the mixture to react with toluene diisocyanate to obtain a polyurethane elastomer; and mixing the polyurethane elastomer, the color-changing microcapsules, a silane coupling agent, a plasticizer, an antioxidant, and an ultraviolet light absorber, followed by melt extrusion and blow molding into a film, so as to obtain the temperature-induced color-changing vehicle film.

The invention discloses a blow molding machine mold closing mechanism of a blow molding machine, and relates to the technical field of blow molding equipment, the blow molding machine mold closing mechanism comprises an operation table, one side of the operation table is provided with a platform, a pair of mold plates are arranged above the platform, the side walls of the mold plates are fixedly connected with a connecting frame, the bottom of the connecting frame is fixedly connected with a sliding block, and the sliding block is in sliding connection with the platform; the center of each sliding block is hinged to one end of a connecting rod, the other end of each connecting rod is hinged to a connecting base, the side wall of each connecting base is fixedly connected with a driving assembly fixedly connected with the platform, the bottom face of the platform is fixedly connected with a connecting block, the side wall of each connecting block is fixedly connected with the output end of a second hydraulic rod, and the second hydraulic rods are fixedly connected with the inner wall of the operation table. By means of the hinged structure of the double sliding blocks and the connecting rods, synchronous opening and closing movement of the mold plates is achieved, the stability of the mold closing process is improved, and mold abrasion is reduced.

The invention discloses an antistatic PET dust-free film and a preparation method thereof, and relates to the technical field of high polymer materials. When the antistatic PET dust-free film is prepared, firstly, 6-bromohexanoic acid reacts with 4-imidazole-1-butyric acid, and then is subjected to ion exchange with potassium hexafluorophosphate to prepare diacid imidazole hexafluorophosphate ionic liquid; the preparation method comprises the following steps: enabling montmorillonite to react with tetraethoxysilane, 3-aminopropyltriethoxysilane and dodecyl triethoxysilane, so as to obtain modified montmorillonite; carrying out copolycondensation on terephthalic acid, the diacid imidazole hexafluorophosphate ionic liquid, ethylene glycol and the modified montmorillonite to prepare a modified polyester master batch; and carrying out melt blending on the modified polyester master batch and a chain extender, and carrying out blow molding to obtain the antistatic PET dust-free film. The prepared antistatic PET dust-free film has the advantages of being antistatic, flame-retardant, super-hydrophobic and low in dust adhesion rate.

The invention relates to the technical field of medicinal packaging container manufacturing, and discloses a processing technology of a double-cavity cartridge bottle, which comprises the following steps: glass tube loading: selecting a glass tube as a raw material, loading the glass tube into a clamping mechanism of forming equipment, fixing the glass tube through a positioning assembly, enabling the axis of the glass tube to coincide with a processing datum line of the equipment, and forming the glass tube; according to the processing technology of the double-cavity cartridge bottle, double-cavity integrated forming is adopted, the strength and the sealing performance of a separation structure of the main body cavity and the bypass cavity are effectively improved, the sealing hidden danger of split splicing is avoided, the leakage and fracture risks are greatly reduced, the technology is matched with the two forming means that a guide pipe is inserted into blow molding and matched with a mold, and medicinal glass raw materials are compatible; the double-cavity cartridge bottle meets the requirements of medical storage for stability and adaptability, meets the storage requirements of various drugs, reduces drug adsorption and chemical reactions, broadens clinical application scenes, and remarkably improves the practical value of the double-cavity cartridge bottle.

To prevent a recessed part, which becomes a defective molding, from being formed in a thick wall portion of an intermediate molding, without prolonging a dwelling time.SOLUTION: An injection core, which is a first mold for performing injection molding to form a preform 200 as an intermediate molding, forms a protrusion 212 on an inner surface 211 in a thick wall portion of the preform 200. To perform blow molding for forming a final molding from the preform 200, when fitting the preform 200 to a blow core 1, which is a second mold, the blow core 1 crushes the protrusion 212 from the inside of the preform 200.SELECTED DRAWING: Figure 1

The invention relates to plastic bottle blow molding integrated equipment, and relates to the technical field of plastic bottle production equipment.The blow molding integrated equipment comprises a rotating rack, and an injection mold, a blow molding mold and a discharging mechanism are sequentially arranged on the outer side of the rotating rack in the circumferential direction of the rotating rack; a plurality of mandrels are arranged on the peripheral side of the rotating rack, the rotating rack is used for driving the mandrels to be sequentially inserted into the injection mold, the blowing mold and the discharging mechanism, and the mandrels are in sliding connection with the rotating rack in the axial direction of the mandrels. An injection molding cavity is formed between the core rod and the injection mold, the injection mold is connected with an injection machine, and the injection machine is communicated with the injection molding cavity; a blow molding cavity is formed between the core rod and the blow molding mold, an air blowing mechanism is arranged on the blow molding mold, a first blow molding air channel is formed in the core rod, and the air blowing mechanism is communicated with the corresponding first blow molding air channel. The applicability of the core rod can be improved, and the core rod can adapt to production of plastic bottles of different sizes.

The invention relates to the technical field of blow molding machines, in particular to an intelligent bottle body blow molding machine based on the Internet of Things, comprising: a bottle preparation module for performing blow molding on a bottle blank to prepare a finished bottle; the data storage module is used for storing a reference cooling curve; comprising a temperature acquisition unit for acquiring the temperature of a plurality of detection points of the prepared bottle and a wall thickness acquisition unit for acquiring the wall thickness values of the detection points; the control module is used for judging whether the preparation of the bottle meets a preset standard or not according to the cooling uniformity characterization value of the bottle and the cooling curve coincidence characterization value of the bottle; and the adjusting module is used for determining a processing strategy according to the wall thickness distribution standard deviation of the bottle. The preparation efficiency of the bottle is improved.

The invention relates to the technical field of multifunctional packaging materials, in particular to a high-barrier moisture-absorbing packaging film and a preparation process thereof.The preparation process comprises the steps that a quaternary ammonium salt intercalator containing phenolic hydroxyl functional groups is prepared; the preparation method comprises the following steps: carrying out intercalation modification treatment on Na-montmorillonite by using a quaternary ammonium salt intercalator to prepare intercalation modified montmorillonite; the intercalation modified montmorillonite and the polyvinyl alcohol resin are compounded through hydrogen-bond interaction between a phenolic hydroxyl functional group contained on the surface of the intercalation modified montmorillonite and a hydroxyl functional group of the polyvinyl alcohol resin, and the organic-inorganic composite type barrier moisture absorption agent is prepared. The high-barrier moisture-absorbing packaging film is prepared by adding the organic-inorganic composite barrier moisture-absorbing agent into a polypropylene film and adopting a three-layer co-extrusion blow molding film forming process, and the film has excellent barrier performance and moisture-absorbing performance and can be used for manufacturing barrier moisture-absorbing packaging bags.

The invention relates to the technical field of PE extrusion blowing process forming, and discloses a PE bottle blowing production device which comprises a base, a first connecting base, an extrusion mechanism, a blow molding mechanism, a clamping block and a cutter, the extrusion mechanism is connected to the base and used for forming a mold blank, the blow molding mechanism is connected to the base and used for blow molding a product, and the clamping block is connected to the cutter. The first connecting seat is slidably connected to the base, the clamping blocks are slidably connected to the first connecting seat, the clamping blocks are used for abutting against the outer wall of a product, the two clamping blocks are symmetrically distributed in the sliding direction of the clamping blocks, and the cutting knife is slidably connected to the base and used for separating excess materials from the product. The extrusion mechanism forms a single parison, the blow molding mechanism performs blow molding on the parison to form a product, and PE bottle blowing production, sliding of the first connecting base, driving of the two clamping blocks to be located on the two sides of the product, clamping of the product by the two clamping blocks and sliding of the first connecting base can be completed, so that excess materials are right opposite to the cutting knife, the cutting knife slides, and the excess materials at a bottle opening are cut off. The production efficiency of the device is improved.

The utility model belongs to the technical field of PE (Poly Ethylene) bottle blow molding machine, in particular to a multi-station feeding PE bottle blow molding machine, which comprises a blow molding machine main body and a blow molding head, the blow molding head is arranged on one side of the blow molding machine main body, and a circular plate I is fixed on one side of the blow molding machine main body close to the blow molding head. When the mold closing device is used, the driving motor is started to enable the arc-shaped toothed plate I to push the fluted disc III to rotate, so that the movable mold is gradually close to the fixed mold for mold closing, the circular plate I continues to rotate, the fluted disc III is in butt joint with the arc-shaped toothed plate I, the movable mold and the fixed mold are far away from each other, and meanwhile, the rolling brush I and the rolling brush II relatively rotate; and the PE bottle is shaken, so that the PE bottle is quickly and stably separated from the inner sides of the movable mold and the fixed mold, and the automatic mold closing device realizes automatic mold closing.

The invention discloses a use of a polylactic acid active packaging film in the preservation of B. cerana. The polylactic acid active packaging film is prepared by using an Ag@MOF carrier to load a natural antibacterial agent, which is then fully mixed with polylactic acid and then melt-extrusion blow molding. The packaging film is used to package the B. cerana to achieve active packaging of the B. cerana, inhibit the growth of microorganisms, and extend the shelf life of the B. cerana. The preservation method has a simple process and is easy to operate. The materials used are biodegradable, reducing environmental pollution caused by packaging. The natural antibacterial agent, Litsea cubeba essential oil, is added to the preservative film, which can effectively inhibit the growth and reproduction of major spoilage bacteria isolated and identified from the B. cerana. The Ag@MOF is used to load the Litsea cubeba essential oil, which can effectively control the release rate of the Litsea cubeba essential oil, achieving long-lasting antibacterial and antioxidant purposes. The preservation method can effectively extend the storage period of the B. cerana.

The application discloses a kind of stackable anti-collapse logistics appliances in the technical field of packaging box, to solve the technical problem of packaging box packing damage in prior art.The logistics appliance includes panel assembly, the panel assembly includes panel and reinforcing bracket arranged in the panel;The panel assembly is integrally formed using a blow molding process or a vacuum forming process.